searls



(No Model.)

Y Y 2 Sheetsl-Sheet 1. 4 A. SEARLS, Sr., A. D. SEARLS,J1., 8v D. SEARLS.

PULVERIZING MACHINE.

No.' 376,112. Patented Jen. l0, 1888.

hu\oLimogmphar. washmkmn. D. C.

(No Model.) 2 sheets-sheet 2.

A. D. SEARDS,S1., A. D. SBARLS, Jr.. 85 D. CgSEARLS.

` BULVBRIZING MAGHNB.

No. 876,112. Patented Jan. 10, 1888.

UNITED STATES PATENT OEEIcE.

AUSTIN D. SEARLS, SR., OF SEWARD, AUSTIN D. SEARLS, JR., OF OHANNA-v HON, AND DEWITT CLINTON SEARLS, OF TROY, ILLINOIS.

PuLvERlzlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 376.112, dated January I 1888. Application filed April 18, 1,887. vSerial No. 235,158. (No model.)

To all whom it may concern,.-

Beit known that we, AUSTIN D. SEAELs, Sr., residing at Seward, Kendall` county, AUsTIN D. SEARLS, Jr., residing at Channahon, Vill 5 county, and DEWIT'I CLINTON SEARLs, resid- Ing at Troy, in Will county, in the `State of Illinois, all citizens of they United States of America, have invented certain new and useful Improvements in Pulveriziiig-Machines, of

1o which the following is a specification, reference being had therein to the accompanying drawings. i

This invention relates to certain improvements in pulverizing-machines for pulverizing I5 dry materials-such as ores, paints, bark, and the like-the construction and operation of which are fully set forth and explainedin the following specification and claims, lreference being had to the accompanying drawings, and 2o the letters and figures marked thereon, which form a part of this specification, in which- Figure l is a side elevation of the machine.r Fig. 2 is acentral vertical longitudinal section of the revolving drum, the stationary case,and

`the feed-spout of the machine and a portion of the boxes, anda side view of the revolving beater-head, the' shafts, the exit-pipe,and boxstandards. Fig. 3 is a vertical cross sectional view of the machine, on line 2 of Figs. l and 2, 3o looking in the direction indicated by the arrow. .Fig. Lis a side view of one of the standard-boxes and a cross-sectional view of the bed-sills of the machine. Fig. 5 is an inside plan 'view of one head of the machine-case. Fig. 6 is aperspective View of one of the beaterplates of the machine. Fig. 7is a cross-seel tional view of one of the arms of the revolving drum of the machine.

l Referring to the drawings, G represents a 4o pair ofparallel bed-sills, to which are securely bolted the stationary parts of the machine,and are arranged a little distance apart and connected by suitable cross-beams to form a strong solid frame.

B B and B B represent standard-boxes, and are securely bolted to sills G in such manner as to be in pairs and in exact line.

S and S represent a pair of shafts, and are arranged, respectively, in the boxes B B and B 5o B in such manner that their facing ends nearly meet and their opposite ends project a short distance from their respective outer box.

D represents a drum open at one end, and having arms J (see Figs. 2 and 3) at its opposite end, connecting it with aeentral side projecting hub, H, which hub is bored to fit shaft S, and is securely keyed on the inner end of said shaft in such manner that said drum Will surround the inner end of shaft S. Said drum is provided on its inner surface with a series 6c of inclined longitudinal ribs, I, as shown in Figs. 2 and4 3, and to the inclined face of said ribs are securely bolted a series of beaterplates, ct, also shown insaid gures. The arms J of said drum are each formed or provided with a longitudinal inclined rib, Z, on their side, within drum D, as shown in Figs. 2 and 3, and in cross-section in Fig. 7,which incline in the'same direction as plates a of the drum.

R represents a beaterhead, which is se- 7o curely fixed on theinner end of shaft S,within drum D, (see Figs. 2 and 3,) and is formed with a series of longitudinal ribs, to which is securely bolted a series of beater-plates, a', as shown in Figs. 2 and 8. Said drum and beat- 75 er-head are adapted to rotate at high speed, one in the reverse direction from the other, which will canse the atmospherewithin the drum to be actively agitated, and more especially by means of said beater-plates P and P are a pair of belt-pulleys, respectively secured on shafts S and S between their boxes, and are for the purpose of rotating said shafts with their xed parts by means of belts passing over saidy pulleys in the usual manner. Wand W represent a pair of balance-wheels. respectively secured on the outer part of said shafts S and S', and are for the purpose of governing the speed of the machine; but, however, said balance-wheels may be' omitted, if 9o desired, as strong belts will drive the machine in a Very uniform manner under all ordinary eircu Instances. The hubs of said pulleys and balance Wheels are arranged to bear against the shaft-boxes (see Fig. l) in such manner as to prevent lateral movement of said shafts, in order that the drum D and beaterhead R may be closely fitted when the balance-Wheels W and W are omitted. Collars are arranged on the shafts in -their place, Ioo

which act in like manner to prevent lateral movement of said shafts. Annuler grooves, as shown in Fig'. 2, may be turned in said shafts within their boxes and run with babbet, which will also hold them from lateral movement.

c and c and e represent parts forming a stationary case, (see Figs. 1, 2, 3, and 5,) which inclose the drum D and beaterhead R, as shown. Thelower part, c', of said case is provided or formed with feet L L, as shown in Figs. 1 and 3,. which rest upon and are iirmly bolted to the bed-sills G G, to properly hold said case in position. The part e of said case forms one of its heads, and is fitted and secured to the lower fixed part, c', by means of screws, as shown in Fig. 2. The upper part, c, of said case is hinged to part c, as shown at c2 in Fig. 3, and is adapted to be turned back to open said case to expose the parts within, and when closed it is secured to the lower part, c', 011 its side opposite said hinges, by means of bolts d d through eye-lugs of said two parts, as shown in Figs. 1 and 3. Said partcis formed with an outwardly-projecting ange, e, (see Fig. 2,) on its side next head e, for overreaching and holding the upper part of said head when the case is closed. The opposite head of said case from parte is formed by the sides of parts c and c. F represents a feed-spout arranged through and is a part of head o, (see Figs. 1, 2, and 5,) through which the material to be pulverized is conducted to the chamber within drum D, surrounding beater-head R.

E represents an exit-pipe (see Figs. 1, 2, and 3) arranged leading from said case, and through which the pulverized material is drawn from the machine by means of the suction of aforced air-blast connecting said pipe. (Not necessary to be shown.)

In operation the drum D and beater-head R are intended to be rotated at equal s peed of about two thousand revolutions a minute in reverse directions from each other. The material to be pulverized is conducted through spout F from a supply above to the chamber within drum D, surrounding beater-head R, and as it enters said chamber it comes in contact with the said beater-plates, and is actively agitated by said beaters, by striking said beaters, by particles striking each other, and by being rapidly thrown from the beaters of head R to those of the drum, and from the beaters of the drum to those of head R and against the walls of said chamber, and also by the action of the agitated air within said chamber until pulverized, when it is drawn from said chambers between arms J of said drum into the surrounding case and out through pipe E by means of the suction of a forced air-blast, as described. The open end of drum D operates close to head c of the case, and thus prevents the material from escaping from said chamber at that end, and while the material is within said chamber in the act of being pulverized it is prevented from escaping with the material which has been pulverized by means of theinclined ribs Z of armsJengaging and throwing it back, as it is then too heavy to be drawn out by the suction of air. It is intended that the beater-plates of the machine shall be of hardened steel, to preserve them from wear as much as possible.

rlhe several arrows shown in the drawings represent the direction in which the beaters rotate and the course of material to the machine before pnlverized and its course from the machine after being pulverized.

Airis supplied into the machine through feed-spout F, together with the material, and thus is constantly drawn across the pnlverizing-chamber of the machine, and constantly gathering and taking from the machine the material as soon as it becomes pulverized and the particles light enough to be carried with the air.

Having thus described our invention, what we claim as new and useful, and desire to secure by Letters Patent, is as follows, to-wit:

In the pulverizing-machine shown and described, the combination of the rotatable drum D, having the inclined lugs or projections I on its inner peripheral surface, beaters a, secured to the inclined faces ofsaid lugs, arms J, having inclined faces, beaters Z,secured to the inclined faces of said arms, rotatable beater-head R, arranged within said drum and adapted to rotate in an opposite direction therefrom, and the beaters a, secured to said beater-head, substantially as and for the purpose set forth.

AUSTIN D. SEARLS, SR. AUSTIN D. SEARLS, JR. DEWI'IT CLlNTON SEARLS. ivitnesses:

Trios. H. HUTCHINs, XVM. J. HUTcI-HNs. 

